List of Printers Which Do or Do Not Display Tracking Dots

I wrote this article/originally created this list, and I would like to emphasize that there is a second generation of this technology that probably uses dithering parameters or something of that sort, and that does not produce visible dots but still creates a tracking code. We don't know the details but we do know that some companies told governments that they were going to do this, and that some newer printers from companies that the government agencies said were onboard with forensic marking no longer print yellow dots.

That makes me think that it may have been a mistake to create this list in the first place, because the main practical use of the list would be to help people buy color laser printers that don't do forensic tracking, yet it's not clear that any such printers are actually commercially available.

What about B&W printers?

There are methods of varying dithering/half-tone patterns in a way that is invisible to they eye but can carry enough bits of information that forensic analysis can identify an encoded printer serial number. Methods of making practically invisible changes to pure text are available too. Colour printers are starting to use these techniques instead of the (more easily noticed by the general public) extra yellow dots.

See the reply to SomeStupidPoint by schoen a few hours ago (and a couple of other posts on this thread) for more detail.

But that would be possible for a photo. But typically you would print some text. I wouldn't expect any dithering / half-tone in a text document.